Abstract: Bignoniaceae adventitious in Argentina. First reference to Podranea ricasoliana, and new records of Campsis radicans. This paper includes the first reference to Podranea ricasoliana and new records of Campsis radicans (Bignoniaceae) for the adventitious Argentinean Flora. Also includes observations on the expansion mechanisms and the status into the naturalization process for P. ricasoliana, besides a key to differentiate the adventitious Bignoniaceae in Argentina.